The utility model provides a supply rifle head of liquid -transfering gun use, including gun head body and with gun head body can dismantle the sleeve of connection, the last external screw thread that is equipped with of gun head body, be equipped with in the sleeve with external screw thread assorted internal thread, outer surface of sleeve gathers has bead -shaped protruding. The utility modeldiscloses a rifle head can increase the frictional force of absorbing between sample and the container to reach and smash the sample fast to pieces and to can absorbing the state, make things convenient for the liquid -transfering gun to carry out absorption operation on next step, and can effectively reduce and use other homogenate to smash the pollution chance that the instrument probably brought to pieces, and reduce intensity of labour.